HILLJE OIL UNIT

Oil · District 03 · Lease #21809

Operator: WYNN-CROSBY OPERATING, LTD.

Fields: TENNA (HILLJE SAND)

Cum Oil

161k BBL

Cum Gas

23k MCF

casinghead

Wells

1

Production

1993-01 — 2010-05

Peak Month

1993-01

Production History

Cum Oil: 160,623 BBL Cum Gas: 22,512 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,694 BBL/mo

Di (annual)

28.8%

b-factor

0.0

EUR

153,657 BBL

R-squared

0.739

type

exponential

Operator History (from monthly production reports)

2018-03 — 2019-01 VIPER S.W.D., LLC 11 mo

2016-09 — 2018-02 EAGLE OIL & GAS CO. 18 mo

2010-08 — 2016-08 WYNN-CROSBY OPERATING, LTD. 73 mo

2009-06 — 2010-07 NCEY HOLDINGS, LLC 14 mo

2003-07 — 2009-05 CENTURY RESOURCES, INC. 71 mo

1998-01 — 2003-06 OWL CREEK PRODUCTION CO., INC. 66 mo

1993-01 — 1997-12 HARDWICK OIL COMPANY 60 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-481-33598	VIPER S.W.D. LLC	1	4,300	1992-11-10